/**
 * Copyright (C) 2011 Whisper Systems
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.appspot.eusms.preferences;

import android.content.Context;
import android.content.DialogInterface;
import android.graphics.Color;
import android.os.Build;
import android.preference.DialogPreference;
import android.util.AttributeSet;
import android.view.View;
import android.widget.AdapterView;
import android.widget.SeekBar;
import android.widget.Spinner;
import android.widget.TextView;

import com.appspot.eusms.util.TextSecurePreferences;

import com.appspot.eusms.R;

/**
 * Dialog preference for encryption passphrase timeout.
 *
 * @author Moxie Marlinspike
 */

public class PassphraseTimeoutPreference extends DialogPreference {

    private Spinner scaleSpinner;
    private SeekBar seekBar;
    private TextView timeoutText;

    public PassphraseTimeoutPreference(Context context, AttributeSet attrs) {
        super(context, attrs);
        this.setDialogLayoutResource(R.layout.passphrase_timeout_dialog);
        this.setPositiveButtonText(android.R.string.ok);
        this.setNegativeButtonText(android.R.string.cancel);
    }

    @Override
    protected View onCreateDialogView() {
        View dialog = super.onCreateDialogView();
        this.scaleSpinner = (Spinner) dialog.findViewById(R.id.scale);
        this.seekBar = (SeekBar) dialog.findViewById(R.id.seekbar);
        this.timeoutText = (TextView) dialog.findViewById(R.id.timeout_text);

        // Can't figure out how to style a DialogPreference.
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
            this.timeoutText.setTextColor(Color.parseColor("#cccccc"));
        }

        initializeDefaults();
        initializeListeners();

        return dialog;
    }

    @Override
    public void onClick(DialogInterface dialog, int which) {
        if (which == DialogInterface.BUTTON_POSITIVE) {
            int interval;

            if (scaleSpinner.getSelectedItemPosition() == 0) {
                interval = Math.max(seekBar.getProgress(), 1);
            } else {
                interval = Math.max(seekBar.getProgress(), 1) * 60;
            }

            TextSecurePreferences.setPassphraseTimeoutInterval(getContext(), interval);
        }

        super.onClick(dialog, which);
    }

    private void initializeDefaults() {
        int timeout = TextSecurePreferences.getPassphraseTimeoutInterval(getContext());

        if (timeout > 60) {
            scaleSpinner.setSelection(1);
            seekBar.setMax(24);
            seekBar.setProgress(timeout / 60);
            timeoutText.setText((timeout / 60) + "");
        } else {
            scaleSpinner.setSelection(0);
            seekBar.setMax(60);
            seekBar.setProgress(timeout);
            timeoutText.setText(timeout + "");
        }
    }

    private void initializeListeners() {
        this.seekBar.setOnSeekBarChangeListener(new SeekbarChangedListener());
        this.scaleSpinner.setOnItemSelectedListener(new ScaleSelectedListener());
    }

    private class ScaleSelectedListener implements AdapterView.OnItemSelectedListener {
        @Override
        public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2, long selected) {
            if (selected == 0) {
                seekBar.setMax(60);
            } else {
                seekBar.setMax(24);
            }
        }

        @Override
        public void onNothingSelected(AdapterView<?> arg0) {
        }
    }

    private class SeekbarChangedListener implements SeekBar.OnSeekBarChangeListener {

        @Override
        public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
            if (progress < 1)
                progress = 1;

            timeoutText.setText(progress + "");
        }

        @Override
        public void onStartTrackingTouch(SeekBar seekBar) {
        }

        @Override
        public void onStopTrackingTouch(SeekBar seekBar) {
        }

    }

}
